Innervation for gluteus medius?

Innervation for gluteus medius?

• A. femoral nerve
• B. superior gluteal nerve
• C. inferior gluteal nerve
• D. nerve to piriformis

Answer: (B)

The essential idea is that gluteus medius is supplied by the superior gluteal nerve. This nerve, arising from the sacral plexus, exits the pelvis through the greater sciatic foramen above the piriformis and then travels to the gluteal region to innervate gluteus medius and minimus and the tensor fasciae latae. This innervation pattern matches the muscle’s role in abducting the thigh and stabilizing the pelvis during gait. By contrast, the femoral nerve mainly innervates anterior thigh muscles, the inferior gluteal nerve supplies gluteus maximus, and the nerve to the piriformis innervates the piriformis.

The essential idea is that gluteus medius is supplied by the superior gluteal nerve. This nerve, arising from the sacral plexus, exits the pelvis through the greater sciatic foramen above the piriformis and then travels to the gluteal region to innervate gluteus medius and minimus and the tensor fasciae latae. This innervation pattern matches the muscle’s role in abducting the thigh and stabilizing the pelvis during gait. By contrast, the femoral nerve mainly innervates anterior thigh muscles, the inferior gluteal nerve supplies gluteus maximus, and the nerve to the piriformis innervates the piriformis.